CN104810494B - For improving the device and method of safety when using battery system - Google Patents
For improving the device and method of safety when using battery system Download PDFInfo
- Publication number
- CN104810494B CN104810494B CN201510031918.7A CN201510031918A CN104810494B CN 104810494 B CN104810494 B CN 104810494B CN 201510031918 A CN201510031918 A CN 201510031918A CN 104810494 B CN104810494 B CN 104810494B
- Authority
- CN
- China
- Prior art keywords
- battery
- exhaust system
- exhaust
- equipment
- battery system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/358—External gas exhaust passages located on the battery cover or case
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to the device and method for improving safety when using battery system.The present invention is based on a kind of methods for improving safety when using the exhaust system of battery system, wherein exhaust system is connected on battery system by means of equipment (E) and is suitable for the controlled exhaust of battery system, wherein according to the change of the pressure of the inside of exhaust system, the equipment (E) of exhaust system is connected air-tightly on battery system.
Description
Technical field
The present invention relates to a kind of preambles according to independent claims for improving peace when using battery system
The device and method of full property.
Background technique
The method for becoming known for improving safety when using the exhaust system of battery system from the prior art, wherein arranging
Gas system is connected on battery system by means of interface and is suitable for the controlled exhaust of battery system.Therefore, 10 DE
2011 079037 A1 for example disclose a kind of battery cell module, a kind of for running the method and one kind of battery cell module
Battery and a kind of motor vehicles, wherein battery cell module includes multiple battery units, especially lithium ionic cell unit, described
Battery unit is respectively provided with exhaust port and furthermore has the gas held space for being assigned to multiple battery units.Here,
Gas held space according to invention disclosed design scheme is that perfect fluid seals and in preferred embodiment party
It is absolutely hermetically connected on battery cell module in formula.
Summary of the invention
The present invention is based on a kind of methods for improving safety when using the exhaust system of battery system, wherein being vented
System is connected on battery system by means of interface and is suitable for the controlled exhaust of battery system.
The method and battery apparatus of the feature for the description characteristic with independent claims that the present invention relates to a kind of.
Core of the invention is that, according to the change of the pressure of the inside of exhaust system, the interface of exhaust system is airtightly
It is connected on battery system.
Airtight connection indicates in this context: substance reaches in exhaust system from battery system via interface, wherein
The substance can neither be from the inner space of battery system again during it is reached in exhaust system from battery system by interface
Battery system, exhaust system or interface cannot can't be reached from the inner space of interface from the inner space of exhaust system
Ambient enviroment in.During airtight connection, the only described substance can reach exhaust system from battery system via interface
In be possible.The case where different from airtight connection, in the case where non-hermetically sealed connection, substance is passed through at it from battery system
It can be reached in battery system, exhaust system or interface ambient enviroment during being reached in exhaust system by interface.
Background of the invention, which is: exhaust system --- for example via exhaust main and/or hose --- connects with battery system
It connects.In order to which exhaust system is connected air-tightly on battery system during exhaust, currently used seal rubber and/or --- borrow
Help the actuator being arranged thus --- big power is generated, the power ensures exhaust system being connected air-tightly to battery system
On.On the other hand, solution according to the present invention, which has an advantage that, does not need seal rubber and/or for generating power
So that exhaust system is connected to the equipment on battery system, and instead of this, go out in exhaust system using by exhaust
Existing pressure itself, to ensure that exhaust system is connected air-tightly on battery system.
In addition, a kind of battery apparatus arranged according to the present invention, especially lithium-ion electric pool equipment, the battery apparatus include
At least one battery system, the battery apparatus have at least one for improving setting for safety when using exhaust system
Standby, wherein exhaust system is suitable for the controlled exhaust of battery system.Here, exhaust system is by means of at least one for making
It is connected on battery system with the equipment for improving safety when the exhaust system of battery system, so that at least one is for using
The equipment of safety is improved when the exhaust system of battery system according to the pressure of the inside of exhaust system airtightly or non-hermetically sealedlyly
It is connected in the exhaust system of battery system.
Other advantageous embodiments of the invention are the themes of dependent claims.
A preferred embodiment according to the present invention, the interface of exhaust system is from meeting or exceeding in exhaust system
The threshold value of the pressure in portion rises and is connected air-tightly on battery system.The advantages of this causes according to the present invention: can be according to battery system
The physical parameter of system and therefore exhaust system is connected on battery system as needed.
The interface of exhaust system is connected air-tightly on battery system according to the change of the pressure of the inside of exhaust system
The case where cause to improve safety when using exhaust system because the exhaust system by its according only to specific pressure,
Especially it is connected air-tightly on battery system in the threshold value of the pressure for the inside for meeting or exceeding exhaust system in fatigue of materials
Aspect is protected.The reduction of the probability of fatigue of materials causes mentioning for the safety in the facility with such exhaust system
It is high.
Next preferred embodiment according to the present invention, threshold value of the interface in the pressure of the inside lower than exhaust system
Become non-hermetically sealed again later.
Another advantageous embodiment according to the present invention, threshold value are about 2bar to 5bar.
Another preferred embodiment according to the present invention, at least one is used in the exhaust system using battery system
The equipment of Shi Tigao safety is connected on fracture valve, and the fracture valve is suitable for the controlled exhaust of battery system.For
Using battery system exhaust system when improve safety equipment to fracture valve on connection cause according to the present invention the advantages of:
Under equipment for improving safety when using the exhaust system of battery system is spatially directly connected to battery system
Rheme is set, and at the location, gas should come out from battery system.
Next preferred embodiment according to the present invention, at least one is used in the exhaust system using battery system
The equipment of Shi Tigao safety has the first tubular adapter tube, and the described first tubular adapter tube is suitable for for exhaust system being connected to
On battery system, wherein the first tubular adapter tube especially includes aluminium.It include aluminium by the first of equipment the tubular adapter tube, described the
One tubular adapter tube has high insensibility relative to the substance come out from battery system.In addition, aluminium is due to its physics, outstanding
It is that the characteristic of plasticity is highly suitable for being formed airtight connection in exhaust system to battery system.
Next preferred embodiment according to the present invention, fracture valve have the second tubular adapter tube, wherein the second pipe
The adapter tube of shape comprising aluminium and is especially at least one for improving setting for safety when using the exhaust system of battery system
Standby component part.The tubular adapter tube of the second of fracture valve is used to mention when using the exhaust system of battery system at least one
The tubular adapter tube of the first of the equipment of high security forms plug connection.
Next advantageous embodiment according to the present invention, at least one is used in the exhaust system using battery system
The tubular adapter tube of the first of the equipment of Shi Tigao safety and/or the second tubular adapter tube for being broken valve are crimpings.At least one
A crimping and fracture for improving the first tubular adapter tube of the equipment of safety when using the exhaust system of battery system
The advantages of crimping of the tubular adapter tube of the second of valve causes according to the present invention: crimping, which mechanical can expend, to be executed smallly and in gas
In the case where close connection, at least one is used to improve the first of the equipment of safety when using the exhaust system of battery system
Second tubular adapter tube of tubular adapter tube and fracture valve is engaged each other due to crimping.The occlusion causes reliable airtight company
It connects.
Next preferred embodiment according to the present invention, at least one is used in the exhaust system using battery system
The tubular adapter tube of the first of the equipment of Shi Tigao safety is surrounded by sealing ring, and wherein sealing ring is especially until 600 DEG C to 700 DEG C
Temperature be Temperature Insensitive.The material of illustrative Temperature Insensitive for sealing ring is high performance plastics or extending
Metal, especially aluminium or copper.Temperature Insensitive ensures for exhaust system to be reliably connected air-tightly on battery system.
Next preferred embodiment according to the present invention, exhaust system and battery system exhaust component it
Between, especially the pad being made of elastomer is disposed between exhaust system and the fracture valve of battery system.Here, in pad especially
It can come out and enter from battery system in gas and be equipped with opening on such position in exhaust system.
Detailed description of the invention
In the following, the present invention is illustrated according to embodiment, available other creative features from the embodiment, but
It is that the present invention is not only restricted to the feature in terms of its range.Embodiment is shown in the accompanying drawings.
Wherein:
Fig. 1 shows according to the present invention for improving showing for the method for safety when using the exhaust system of battery system
It is intended to；
Fig. 2 a and 2b show schematic diagram of the apparatus in accordance with the present invention, and the equipment is suitable for airtightly connecting exhaust system
It is connected on battery system.
Specific embodiment
It is schematically shown in Fig. 1 according to the present invention for improving safety when using the exhaust system of battery system
The method of property.Start this method by method and step 11.It is checked in pressure checking step 22: the pressure of the inside of exhaust system
Whether the threshold value of pressure is met or exceeded.Pressure threshold can especially be located at about 2bar to 5bar.In order to check exhaust system
Inside pressure, pressure sensor can be used or for determining other sensors indirectly measured, the indirect amount
It is adapted to determine that pressure.The other amounts for being adapted to determine that pressure for example can be temperature.In addition, for example also can be used following
Sensor, the sensor are suitable for the substance for proving to come out from battery system.Here, for example can according to substance, especially
The case where whether gas comes out from battery system executes according to the method for the present invention.
If the pressure of the inside of exhaust system does not only reach but also is not above the threshold value of pressure, repeatedly pressure is examined
Look into step 22.
On the contrary, being executed in Connection Step 33 by exhaust system if the pressure meets or exceeds the threshold value of pressure
System is connected air-tightly on battery system.Airtight connection is executed by means of the equipment of exhaust system.
Cause the execution of airtight connection for example can be particularly by being controlled according to the pressure of the inside of exhaust system
Actuator, especially servo motor, preferably motor initiatively occur.
Cause the execution of airtight connection for example can also be particularly by caused by the pressure as the inside of exhaust system
Plastic deformation or by pressure or come out gas react and expand substance and passively occur.
In particular, cause the execution of airtight connection that can not only occur initiatively but also passively.Causing gas
Close connection only passively execute in the case where, do not need pressure checking step 22.
After Connection Step 33, drops checked in checking step 44 under stress, whether the pressure of the inside of exhaust system
Be lower than or already below pressure threshold value.When the pressure of the inside of exhaust system had not only been not below but also not already below pressure
When threshold value, repeats pressure and decline checking step 44.If the pressure of the inside of exhaust system be lower than or already below pressure threshold
Value, then interface becomes non-hermetically sealed in separating step 55 again.
Causing the execution of non-hermetically sealed connection can for example control particularly by according to the pressure of the inside of exhaust system
Actuator, especially servo motor, preferably motor initiatively occur.
Causing the execution of non-hermetically sealed connection can also for example reduce particularly by the pressure of the inside due to exhaust system
Caused by plastic deformation or by pressure or come out gas react and shrink substance and passively occur.
In particular, cause the execution of non-hermetically sealed connection that can not only occur initiatively but also passively.Causing
Non-hermetically sealed connection only passively execute in the case where, do not need pressure decline checking step 44.
The case where for passively executing not only airtight connection but also non-hermetically sealed connection, had not both needed pressure inspection step
Rapid 22 do not need pressure decline checking step 44 again.
By end step 66, terminate according to the method for the present invention.
It is schematically shown in Fig. 2 a and 2b according to the present invention for being mentioned when using the exhaust system of battery system
The equipment of high security, the equipment are suitable for for exhaust system being connected air-tightly on battery system.Exhaust system and battery
System is not shown in the figure.In fig. 2 a, exhaust system is connected on battery system non-hermetically sealedly；In figure 2b, it is vented
System is connected air-tightly on battery system.From the state described in fig. 2 a to the transition of the state described in figure 2b according to
The pressure of the inside of exhaust system either actively or passively carries out.
Passively transition especially can by the pressure of the inside as exhaust system rise caused by plastic deformation or
Occurred by the substance marked with QS that pressure or the gas come out are reacted and expanded.
In addition, causing the transition of airtight connection for example can be initiatively particularly by the pressure according to the inside of exhaust system
Power come it is controlling, in figure with A label actuator, especially servo motor, preferably motor and occur.
In particular, cause the execution of airtight connection that can not only occur initiatively but also passively.
Therefore, whether exhaust system is connected air-tightly to pressure of the situation on battery system depending on the inside of exhaust system
Power.
When exhaust system is connected air-tightly on battery system, going out for the gas of exhaust system is flowed to from battery system
Being most unlikely.
The first tubular adapter tube of exhaust system is indicated with E.First tubular adapter tube E especially can be crimping and/or
Include aluminium.
The second tubular adapter tube of battery system, the especially battery system fracture valve being not shown is indicated with SB.
The tubular adapter tube SB of the second of battery system for example can be crimping and/or comprising aluminium.E and SB is according to according to Fig. 2 a and Fig. 2 b
Preferred embodiment the equipment for improving safety when using exhaust system is collectively formed.
By actuator A, the tubular adapter tube E of the first of exhaust system can along direction R1, along direction R2, along direction R3 and
Along direction R4 move and/or the second tubular adapter tube SB of battery system can along direction R1, along direction R2, along direction R3 and edge
Direction R4 movement.For example, control unit S can be passed through to the control of actuator A.Control by control unit S to actuator A
Occur according to the pressure of the inside of exhaust system and/or with the presence or absence of the case where urgent electric discharge of battery system.
In particular, it is also possible to, pass through the pressure change itself occurred inside or outside exhaust system, exhaust system
The first tubular adapter tube E moved along direction R1, along direction R2, along direction R3 and along direction R4 and/or battery system second
Tubular adapter tube SB is moved along direction R1, along direction R2, along direction R3 and along direction R4.The tubular adapter tube of the first of exhaust system
E is along direction R1 and along the movement of direction R2 and/or the second tubular adapter tube SB of battery system along direction R1 and along direction R2's
Movement can especially be caused by the battery apparatus to change about its volume being not shown.
It is indicated with ZR among at least one between the equipment of exhaust system and the second tubular adapter tube SB of battery system
Space.In at least one intermediate space ZR, self-styled sealing element can be disposed.Self-styled sealing element can be used for supporting to arrange
Gas system is connected air-tightly on battery system and especially can be for improving setting for safety when using exhaust system
Standby part.The substance QS that self-styled sealing element is in particular reacted and expanded to pressure or the gas come out, the object
Matter can be placed on the second tubular adapter tube SB of the first tubular adapter tube E and/or battery system of exhaust system.
In the state schematically illustrated in fig. 2 a, to pressure or the gas substance QS that reacts and expand come out
Do not expand: interface is non-hermetically sealed.
In the state schematically illustrated in figure 2b, to pressure or the gas substance QS that reacts and expand come out
Expansion: interface is airtight.
Claims (13)
1. the method for improving safety when using the exhaust system of battery system, wherein the exhaust system is by means of setting
Standby (E) is connected on battery system and is suitable for the controlled exhaust of battery system, which is characterized in that according to the exhaust system
The equipment (E) of the change of the pressure of the inside of system, the exhaust system is connected air-tightly on the battery system, wherein
The equipment (E) of the exhaust system from the threshold value for meeting or exceeding the pressure of inside of the exhaust system with the electricity
Cell system airtightly connects, and make the equipment (E) lower than the exhaust system inside pressure threshold value after again
Become non-hermetically sealed.
2. the method according to claim 1, wherein the threshold value is 2bar to 5bar.
3. battery apparatus, the battery apparatus includes at least one battery system, and the battery system is used for at least one
The equipment (E) that safety is improved when using exhaust system, wherein the exhaust system is suitable for the controlled row of battery system
Gas, which is characterized in that the exhaust system is connected on the battery system and extremely by means of equipment described at least one (E)
A few equipment (E) airtightly or non-hermetically sealedly is connected to the battery system according to the pressure of the inside of the exhaust system
In the exhaust system of system, wherein the equipment (E) of the exhaust system meets or exceeds the inside of the exhaust system certainly
The threshold value of pressure rises and airtightly connect with the battery system, and makes the equipment (E) lower than in the exhaust system
Become non-hermetically sealed again after the threshold value of the pressure in portion.
4. battery apparatus according to claim 3, wherein the battery apparatus is lithium-ion electric pool equipment.
5. battery apparatus according to claim 3, which is characterized in that at least one described equipment (E) is connected to the electricity
On the fracture valve of the controlled exhaust for being suitable for battery system of cell system.
6. battery apparatus according to claim 5, which is characterized in that at least one described equipment (E) is tubular with first
Adapter tube.
7. battery apparatus according to claim 6, which is characterized in that the described first tubular adapter tube includes aluminium.
8. battery apparatus according to claim 6, which is characterized in that the fracture valve has the second tubular adapter tube
(SB), and the second tubular adapter tube (SB) of the fracture valve and at least one equipment (E) it is described first tubular
Adapter tube forms plug connection.
9. battery apparatus according to claim 8, which is characterized in that the described second tubular adapter tube (SB) includes aluminium.
10. battery apparatus according to claim 8, which is characterized in that the first of at least one equipment (E) is tubular
Second tubular adapter tube (SB) of adapter tube and/or the fracture valve is crimping.
11. according to the described in any item battery apparatus of claim 6 to 10, which is characterized in that at least one equipment (E)
First tubular adapter tube is surrounded by sealing ring, and the sealing ring is especially until 600 DEG C to 700 DEG C of temperature is that temperature is ineffective
Quick.
12. the battery apparatus according to any one of claim 3 to 10, which is characterized in that in the exhaust system and institute
Between the component for stating the exhaust of battery system, it is disposed with the pad being made of elastomer, wherein in gas from described in the pad
It is come out in battery system and enters the position in the exhaust system and be equipped with opening.
13. battery apparatus according to claim 12, wherein the component of the exhaust of the battery system is the battery system
The fracture valve of system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014201175.2A DE102014201175A1 (en) | 2014-01-23 | 2014-01-23 | Method and device for increasing safety when using battery systems |
| DE102014201175.2 | 2014-01-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104810494A CN104810494A (en) | 2015-07-29 |
| CN104810494B true CN104810494B (en) | 2019-06-25 |
Family
ID=53497878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510031918.7A Active CN104810494B (en) | 2014-01-23 | 2015-01-22 | For improving the device and method of safety when using battery system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104810494B (en) |
| DE (1) | DE102014201175A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203150642U (en) * | 2012-12-21 | 2013-08-21 | 山东沃特森新能源科技有限公司 | Exhaust valve for lithium ion battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011079037A1 (en) | 2011-07-12 | 2013-01-17 | Sb Limotive Company Ltd. | Battery cell module, method for operating a battery cell module and battery and motor vehicle |
| KR101863091B1 (en) * | 2011-11-24 | 2018-06-01 | 삼성에스디아이 주식회사 | Secondary battery |
-
2014
- 2014-01-23 DE DE102014201175.2A patent/DE102014201175A1/en not_active Withdrawn
-
2015
- 2015-01-22 CN CN201510031918.7A patent/CN104810494B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203150642U (en) * | 2012-12-21 | 2013-08-21 | 山东沃特森新能源科技有限公司 | Exhaust valve for lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104810494A (en) | 2015-07-29 |
| DE102014201175A1 (en) | 2015-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6177505B2 (en) | Hydrogen safe filling system and hydrogen safe filling method | |
| US7287413B2 (en) | Gas sensor unit and sensor cap | |
| US20200335833A1 (en) | High-Voltage Battery for a Motor Vehicle Having a Detection Device for Detecting Damage to the High-Voltage Battery, Method for Detecting Damage to the High-Voltage Battery, and Motor Vehicle | |
| CN104051754B (en) | Thermal pressure release device and relevant system and method | |
| EP3009820A1 (en) | Pneumatic detector assembly with bellows | |
| CN105280859B (en) | Electric vehicle battery system collision protection structure and its assembly method and method for dismounting | |
| CN104810494B (en) | For improving the device and method of safety when using battery system | |
| CN108182327B (en) | Multi-axis thermal mechanical fatigue life prediction method based on linear damage accumulation | |
| CN106468788B (en) | battery negative pressure detection system | |
| CN104034436B (en) | Separate type elastic temperature sensor | |
| CN105378973A (en) | Method for manufacturing a connection of a degassing device to at least on battery cell, and battery system | |
| US9250262B1 (en) | Method and apparatus for an integrated isolation mechanical filter with substrate based package | |
| CN107542721A (en) | Have fool proof gas cylinder actuators | |
| CN105031870B (en) | Bellows actuated temperature compensated pressure switch device and system | |
| JP2015505953A5 (en) | ||
| CN204202553U (en) | A kind of rupture disk state monitoring apparatus | |
| US9418527B2 (en) | Pneumatic detector switch having a single diaphragm for alarm and fault conditions | |
| CN104129751B (en) | The method for manufacturing pressure sensor | |
| CN114800464A (en) | Explosion-proof type cooperative robot and explosion-proof method thereof | |
| US11391402B2 (en) | Flexible pipe and manufacturing method thereof | |
| US20150083359A1 (en) | Method for preventing and recognising coolant discharges from complex hydraulic systems | |
| CN114944528A (en) | Flexible package battery containing indwelling tube and detection method thereof | |
| CN103940841B (en) | A kind of Lead Acid Battery Used for Electric Vehicle moulds the method for testing of shell thermal deformation | |
| PH12016500901B1 (en) | Vapor pipe fracture detection device | |
| CN111396611A (en) | Mechanical active explosion-proof device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |